🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.37 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.74 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.33

Radius: 1.62

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 0.56 AU - 0.92 AU

Year: 241 Days

Day: 45.1 Hours

Environment

Temp: 158 °C

Axial Tilt: 19.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.11 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.51

Radius: 0.76

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 1 AU - 1.22 AU

Year: 443 Days

Day: 19.4 Hours

Environment

Temp: 9 °C

Axial Tilt: 21.4 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 37,113,151 km

• M1: 134,189 km (0.109 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.18 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.87

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 0.91 AU - 1.45 AU

Year: 485 Days

Day: 31.1 Hours

Environment

Temp: -16 °C

Axial Tilt: 6.9 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 37,113,151 km

• M1: 322,084 km (0.026 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.49

Radius: 1.65

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 1.15 AU - 1.71 AU

Year: 648 Days

Day: 17.2 Hours

Environment

Temp: -35 °C

Axial Tilt: 45.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 1.78 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.63

Radius: 1.47

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 1.68 AU - 1.88 AU

Year: 899 Days

Day: 35.6 Hours

Environment

Temp: -74 °C

Axial Tilt: 42.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 37,113,151 km

• M1: 67,020 km (0.102 R)

Planet 6 - Terrestrial

Semi-Major Axis: 4.15 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.47

Radius: 1.44

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 3.87 AU - 4.43 AU

Year: 3202 Days

Day: 18.7 Hours

Environment

Temp: -131 °C

Axial Tilt: 4.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 5.2 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 6.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 369.4

Radius: 12.5

Gravity: 2.36 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 5.17 AU - 7.31 AU

Year: 5904 Days

Day: 13.2 Hours

Environment

Temp: -161 °C

Axial Tilt: 128.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 37,113,151 km

• M1: 155,582 km (0.091 R)
• M2: 835,205 km (0.051 R)
• M3: 1,450,651 km (0.084 R)
• M4: 2,236,488 km (0.041 R)
• M5: 3,063,016 km (0.039 R)
• M6: 4,220,006 km (0.103 R)
• M7: 5,993,788 km (0.108 R)
• M8: 6,852,929 km (0.038 R)
• M9: 8,477,562 km (0.06 R)
• M10: 9,202,513 km (0.091 R)
• M11: 10,218,881 km (0.088 R)
• M12: 16,107,053 km (0.083 R)
• M13: 23,049,442 km (0.119 R)
• M14: 23,711,263 km (0.025 R)
• M15: 24,310,103 km (0.115 R)

Planet 8 - Gas Giant

Semi-Major Axis: 6.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 618.6

Radius: 13

Gravity: 3.66 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 4.99 AU - 8.05 AU

Year: 6306 Days

Day: 7.8 Hours

Environment

Temp: -167 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 37,113,151 km

• M1: 161,715 km (0.089 R)
• M2: 624,571 km (0.089 R)
• M3: 1,391,260 km (0.092 R)
• M4: 1,907,223 km (0.103 R)
• M5: 2,952,613 km (0.12 R)
• M6: 3,958,509 km (0.063 R)
• M7: 5,295,765 km (0.068 R)
• M8: 5,802,901 km (0.106 R)
• M9: 6,277,127 km (0.057 R)
• M10: 7,895,776 km (0.057 R)
• M11: 11,155,663 km (0.108 R)
• M12: 13,515,270 km (0.113 R)
• M13: 14,466,114 km (0.087 R)
• M14: 15,163,839 km (0.073 R)
• M15: 16,067,260 km (0.049 R)
• M16: 18,584,543 km (0.101 R)
• M17: 21,058,294 km (0.115 R)
• M18: 21,803,590 km (0.119 R)
• M19: 24,064,912 km (0.095 R)
• M20: 24,470,023 km (0.047 R)
• M21: 25,377,484 km (0.088 R)
• M22: 26,221,664 km (0.114 R)
• M23: 30,726,355 km (0.091 R)
• M24: 33,161,210 km (0.06 R)

Planet 9 - Gas Giant

Semi-Major Axis: 6.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 686.6

Radius: 11.8

Gravity: 4.93 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 6.48 AU - 7.24 AU

Year: 6805 Days

Day: 11 Hours

Environment

Temp: -154 °C

Axial Tilt: 19.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 37,113,151 km

• M1: 146,756 km (0.041 R)
• M2: 529,726 km (0.074 R)
• M3: 1,451,249 km (0.109 R)
• M4: 1,929,513 km (0.084 R)
• M5: 2,731,956 km (0.099 R)
• M6: 3,515,251 km (0.053 R)
• M7: 4,009,223 km (0.074 R)
• M8: 4,576,199 km (0.117 R)
• M9: 5,344,534 km (0.117 R)
• M10: 5,903,132 km (0.107 R)
• M11: 7,064,909 km (0.066 R)
• M12: 7,547,512 km (0.103 R)
• M13: 9,346,127 km (0.098 R)
• M14: 10,345,590 km (0.094 R)
• M15: 10,871,277 km (0.068 R)
• M16: 13,887,021 km (0.068 R)
• M17: 14,586,540 km (0.087 R)
• M18: 15,992,760 km (0.101 R)
• M19: 19,430,669 km (0.087 R)
• M20: 20,828,512 km (0.06 R)
• M21: 21,900,679 km (0.111 R)
• M22: 23,906,338 km (0.069 R)
• M23: 27,911,821 km (0.104 R)
• M24: 28,558,234 km (0.04 R)
• M25: 32,852,291 km (0.078 R)
• M26: 34,304,138 km (0.045 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 343 - 16,642 AU

Composition

Type: Cometary Reservoir

System's final boundary, containing trillions of icy planetesimals.

Gravitational Limit